Forward fill and stroke styles from 2d canvas to canvas filters

third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h

Index: third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h
diff --git a/third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h b/third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h
new file mode 100644
index 0000000000000000000000000000000000000000..0184c779d3535244f95f800aa1b86e44ef61a120
--- /dev/null
+++ b/third_party/WebKit/Source/platform/graphics/filters/PaintFilterEffect.h
@@ -0,0 +1,33 @@
+// Copyright 2015 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef PaintFilterEffect_h
+#define PaintFilterEffect_h
+
+#include "platform/graphics/filters/FilterEffect.h"
+#include "third_party/skia/include/core/SkPaint.h"
+
+namespace blink {
+
+class PLATFORM_EXPORT PaintFilterEffect : public FilterEffect {
+public:
+    static PassRefPtrWillBeRawPtr<PaintFilterEffect> create(Filter*, const SkPaint&);
+    ~PaintFilterEffect() override;
+
+    FilterEffectType filterEffectType() const override { return FilterEffectTypeSourceInput; }
+
+    TextStream& externalRepresentation(TextStream&, int indention) const override;
+    PassRefPtr<SkImageFilter> createImageFilter(SkiaImageFilterBuilder&) override;
+
+    bool affectsTransparentPixels() override { return true; }

[fs, 2016/01/11 20:19:24]

Since this is an input I'm sure if this feels a bit weird to me (and will be
redundant with the !size part of the condition where this is used.) I'll defer
to whoever signs off on he platform/ bits though.

[ajuma, 2016/01/11 21:33:08]

I interpreted "affectsTransparentPixes" as "produces non-transparent input even
when it doesn't have non-transparent input", but I'm not sure if this is the
intended interpretation. As you say, it doesn't affect current behavior because
of the !size part of the condition where it's used.

[ajuma, 2016/01/11 21:34:18]

Sorry, I meant "produces non-transparent *output* even when it doesn't have
non-transparent input"

+
+private:
+    PaintFilterEffect(Filter*, const SkPaint&);
+
+    SkPaint m_paint;
+};
+
+} // namespace blink
+
+#endif // PaintFilterEffect_h